Rotary tiller attachment for disk plows



March 18,1930. 'G. H. HALL .l 1,7s.o,sh1

ROTARY TILLER ATTACHMENT FOR DISK PLQWS Filed April 5. 1928 3 Sheets-sheaf. 1

March 18, 1930. G. H. HALL I ROTARY TILLER ATTACI'i MENT FOR DISK FLOWS Filed A r l 3. 1928 I {Sheets-Sheet 2 Irv/972202- I March 18, 1930. G. H. HALL 1,750,887v

ROTARY TIQLER ATTACHMENT FOR DISK FLOWS.

Filed April 3. 1928 3 Sheets-Sheet 3 Patented Mar. 18, 1930 GUY HERRING HALL'O]? EVANSTON, ILLINOIS ROTARY TILLER ATTACHMENT'FOR Drsx rLows Application filed April 3,

My invention relates to that class of disk plows which are now in common use, and which are supported on wheels. In disk plows of this character, as is well known, the

disk itself is of such curvature and is presented to its work at such an angle that it will, when being advanced, cut out from the soil a furrow slice and cause this furrow slice to move relative to the disk rearwardly and laterally and across the face of the disk, and at the same time it will impart to the furrow slice the initial part only of the necessary turningover movement, to the extent that if no means were provided for completing. the initial turning-over movement of the furrow slice, the trash on the surface of the soil would not be buried. Disk plows of this character are usually provided with a stationary mould board, the function of which is to engage the 29 furrow slice and complete its turning-over movement that was initiated by the disk.

The object of my invention is to provide a rotary tiller device in the nature of an attachment which may be readily, quickly and easily applied to a disk plow beam andoperated by power from a tractor or the like, and which when in use will co-operate with the disk, receive the furrow slice from the disk, complete the turning-over movement of the furrow slice, and at the same time thoroughly pulverize it and form an ideal seed bed.

A further object is to provide a rotary tiller of this character which, when combined with a disk plow, may be advanced by atractor and the rotary tiller operated by power from v the tractor with a minimum of applied power, to the extent that a tractor capable of advancing an ordinary disk plow with its mould board for completing the turning-over movement of the furrow slice will operate my improved device at the same speed and to cut the same size or number of furrow slices.

My invention consists in theconstruction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

Figure 1 shows a top or plan view of a por- 1928. Serial No. 266,929.

tion of a sulky plow frame and a disk plow carried thereby, and my improved rotary tiller device attached to the plow beam and fixed in proper position relative to the disk.

Figure 2 shows a rear elevation of same.

Figure 3 shows a side elevation of same.

Figure l shows a detail view with the parts tilted'from normal working position to aposition showing the full circular outline of the disk, and also showing the rotary tiller shaft in a vertical position forthe purpose of illustrating the relative positions of the endsof the tiller blades and the adjacent edgeof the disk. V

Figure 5 shows a detail sectional view taken on the line 5-5 of Figure 4;, and illustrating by dotted lines the outlines of a furrow slice passing across the face of the disk and into the field of operation of-the tiller.

Figure 6 shows a transverse sectional view .on the line 6-6 of Figure 3; and

Figure 7 shows a detail sectional view illustrating the housing and frame member for the upper end of the tiller shaft.

Referring to the accompanying drawings, I have used the reference numeral 10 to indicate generally the plow frame, and 11 its supporting wheels. 12 is the plow beam, and rotatively mounted upon the plow beam is the disk plow 13 having a shaft 14 mounted in the. bearing 15 on the beam 12. The working face has the degree of concavity now commonly employed, and the disk is extended from the plow beam at the same degree of angularity' as is now commonly employed in disk plows of this character. I alsoemploy the usualscraper blade 16, but have provided for it a curved stem 17 mounted in a bracket 18 hired to a plow beam. These parts are so arranged that the position of the scraper may be adjusted relative to the disk, so that the scraper blade will have more or less frictional engagement with the furrow slice or may be moved to position where it will be out of frictional engagement with the furrow slice, and in all of these positions the scraper blade will perform its function of preventing the accumulation of soil upon the working face of the disk. I

i It will be noted from the drawings that I the purpose oonnectionwith do not enipibgfahy stationary mould board adjacent to the working face of the disk, for of'completing the turningover movement of. the furrow slice, because that is unnecessary when the disk plow is used in my imp oved l rt Y imp ov -braclret 19 which maybe connected to are Plow beam: and hich supports a tiller shaft housing his housing freceivesga tiller shaft 21 and has bearings in the housing, and

at one side of the housingtiiere 1s a power shaft housing 22 whichnreceivesthe power shaft23, the forward end of which is conested tomb: route-ta eo .dsvi 9i he, actor Whiehdtaws, eip w; or t y ota edaby nin epehd nt m t h 1 pQr-tmn ,aser 9 til t'xihletlteh'h pr je P'IQUPWM'CU'YJ t right angle th .-shait -al es V g red-with; relatiea o ac 0tl '1, nclearly shown inthedrawing d h lover Qikdfi 01 fih sh ft fist' hpphrted n P si i wher z t :P disct downwa dlyah l.1 W 1y andila erallyasl lear y;i ust atedi e lle b a es P ftm y drawings, andtheishhtt sso Po t n 'With relation to the adjacent edge of the disk that v the-Maria z'tifltinbl fks, ic uring thei rota y excrement; ,Willcloselyappro ach the ad a'cent of these l desgwil assume wh n theyhreih their p sition of movement closest to theedge H x i-15 ,1 i, u.

' a'liilprhc. .qal use, alida s m g hat h di Of the disk. y plowiia beingia vah e llbyhM t e in h ordinary mannerg and that the p uly erivzer s ehi'g rotated. rap dly-m hs; dir c ion sh wn 7 byithezarr ws ,in F gtlr 5 m l g P9 take-off at a hmen of thetra r c ected to theipowerlshaft 23, then the disk willenter the soil andut rom i a furrow; slicawhich to; furfrom slic w llt he. moved re ah-dly n l latferally, =ani:l one edge of it willbe tilted upwardlynby the. normal .action of the disk jPlQWa,nWh lI-thiSiu 'm lice-pa sesfbeyonpl i eme ned e-nfrh d sk, it ll; n a 1 byithe tiller 7 atfhigh nspeed, approximately five hundred lades wh ch. ar be g tated revolutions ,a m nute, and thesebladeswfll complete the turning-over movement of the furrow slice E-t Ithe extent at least that the iillta'shr willube 'gthoroughly covered, and at the :sameatimfe. these tiller blades will 'ou'gihl-y pulverize,the soil and deposit it upon itlie field in condition forming an ideal seed tea alo edilieliiiistianadvatesaaaib the use; of my. impr vement isn't hat ,witha tractor 'of' Tgiven; power certain nimber or isi'zeiof disk plowslmaY he ,a y nted thr l fa the soil at a given speed, but will do; onlythe plowingfipart .ofith rirorka'jleax hg th d as ing an harrowing for subsequent operatiller device comprises a relative ftofthe "actuipon the furrowslice Jasjftractor 'slice.. o

Ta s a h insg it l upip li -9 .i l h pl w,fi hm%l it 'blades'fiXed l i the, 'shaftir n a'l t klya i t g tangls V beingpo'sitioned inthe rear of m an]; and

tiohs; whereas with my improvementi'can with the same engine and the same number or size of disks complete 'not only the plowing operationg-b'ut also 'the soil pulverizing operations and'pijepare an ideal seed bed in one f tm sk th he Prop ler 1 1a 1 up n t e throw-e e they/ re. .mt ih to some x ent rearwardly jace'nt portion of the a'r1:o;v, -S;11 H

" h til er f d s o a certain extent,

and. tend 'to advancejthe plow, wit resultlthat with, m improve a plowl can plowv andpulvefriz areain agiven tin ie'as can be 'itl the or ar amount bf api' e fpq Under certaincond tio' thattlie scraper-f lo iSv JL Qt t-"aids, in s o ring? 1th" he h' f Ce sna? it f 1 rkingjaceof the dislg'and thatjunl'ersu 11- conditi moveiit circuinferentially v fromftlio furrowuslice to a p wil no are rl lo lli q htiw' row sllce propeffb fWlHb?fill}? Q l. perform its function of 1 s ouring that is dim additional frictional "losses urrow sliceacrosstheplow, tndjfog W ,7 nience d c, e. mess; I hai s i h w d this custom/although g1, recog ize; i a, it vis the plow which travels relative to the fiirrow .I claim as mylinveiition; H .i

11.0w it .fllgiT l ,co bi h wn' if; a. lt'at'able carrier the plow fra f a h w ki 'g ace; andibein lprr i td 1219 h 7 b' hg a fiiahs l l t only of 'rthe t'rirnm ov r-"mo r o l ts was: @1513? hihr is g ij hd .rq a fhlx. sun

being extended substantially parallel with the v 'disl I il s l V e having under surface ofthe furrow slioe as it v passes from the "adjacent edge of thedisk' a i n d t e t ohvh wt h the r rprovem'entythe same area oan'be "coveredas .iii htfa furrowslice, m ve f fo iiw i 1.15 and outwardly and perform the' i itial art entail "the with the shaft out of the path of travel of the furrow slice and the tiller blades in position to engage and penetrate the furrow slice during its rotation, completing its turning-over movement and pulverizing it and throwing it rearwardly and outwardly.

2. The combination of a plow frame, a rotatable disk carried by the plow frame having a concave working face and being presented at such angle that when being advanced it will cut a furrow slice, move it rearwardly and outwardly and perform the initial part only of the turning-over movement of the furrow slice, a rotary tiller device comprising a shaft having its upper end rotatably supported on the plow frame, a series of tiller blades fixed to the shaft and extended substantially at right angles thereto, said shaft being positioned in the rear of the disk and being extended substantially parallel with the under surface of the furrow slice as it passes from the adjacent edge of the disk with the shaft out of the path of travel of the furrow slice and the tiller blades in position to engage and penetrate the furrow slice during its rotation, completing its turningover movement and pulverizing it and throwing it rearwardly and outwardly, said tiller blades being of varying lengths so that each may extend close to, but not touch, the edge of the disk.

3. The combination of a plow frame, a disk carried by the plow frame and having a concave working surface and supported at such an angle relative to the frame that when being advanced it will out a furrow slice and cause same to move relative to the disk rearwardly and laterally and to complete a part only of the turning-over movementof the furrow slice, a rotary tiller device comprising a shaft and a series of tiller blades fixed to it, said tiller device being rotatably supported at its upper end upon the plow frame and being extended downwardly, forwardly and outwardly in the rear of the disk and in position where the disk will shield the tiller shaft from direct contact with the furrow slice and the blades will engage the under surface of the furrow slice and complete its turning-over movement, thoroughly pulverizing it and throw it outwardly and rearwardly relative to its path of travel when passing from the disk, said tiller blades being of varying lengths so that each will extend to approximately the same distance from the adjacent edge of the disk, and means for applying power to the shaft for rotating it at high speed.

4. The combination of a disk plow and a rotary tiller device, comprising a shaft and tiller blades fixedto the shaft, means for rotatively supporting the shaft at its upper end on the plow frame, and means for rotating the shaft, said shaft being inclined downwardly, forwardly and outwardly in position where it is shielded by the disk from direct engagement with the furrow slice, and in position where the tiller blades will engage the furrow slice after leaving the disk, complete its turning-over movement, pulverize it and throw it outwardly and rearwardly.

Des Moines, Iowa, January 26, 1928.

GUY HERRING HALL. 

